Abstract: A seatback latch mechanism is provided for locking a seatback in one of either an upright position or a fold-forward position relative to a seat. The seatback latch mechanism includes a lower quadrant rotatably supporting an upper quadrant. A lock cam and lock pin are each rotatably supported by the upper quadrant. A first surface of the lock pin interfaces the lock cam and a second surface of the lock pin interfaces the lower quadrant. The lock cam is biased to selectively force the lock pin into engagement with the lower quadrant for locking the upper quadrant relative to the lower quadrant in either of two positions. When the upper quadrant pivots relative to the lower quadrant, the lock pin rotates relative to the upper quadrant.